Dust excluder for internal-combustion engines



June 9, 1925. 1,541,107

w. H. BROWN DUST EXCLUDER FOR'INTERNAL GOHBUSTIOH ENGINES Filed Dec. 5l 1918 3 Sheets-Sheet l June 9, 1925. 1,541,107

v w. H. BROWN DUST' EXCLUDER FOR INTERNAL COMBUSTION ENGINES l Filed Dec. s, 193.51` {sheets-smet 2 June 9, 1925. A

1,541,107 w. H. BROWN DUST EXCLUDER FOR INTERNAL COMBUSTION ENGINES Filed Dec. 5, 1918 3 Sheets-Sheet 3 Z 4 Mam/jv Patented .lune 9, T9254.

UNITED STATES WILLIAM H. BROWN, 0F CLEVELAND, OHIO.

DUST EXC-LUDER FOR INTERNAL-COMBUSTION ENGINES.

Application filed `lecemner 5, 1918. Serial No. 265,380.

To all whom t may concern.'

Be it known that I, WILLIAM H. BROWN, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Dust Excluders for Internal-Combustion Engines, of which` the following is a specification.

My invention has for its object the provision of a simple and practical means for supplying dust-free air to the intakes of internal combustion engines while they are being operated in dusty atmospheres. It is particularly advantageous when used in connection with tractor or motor truck engines which, from the nature of the service in which ythey are employed, often operate almost continuously in extremely dusty atmospheres.

I have observed that while great clouds of dust are raised by tractors and motor trucks, by far the greater portion of the dust, and particularly that portion which is most abrasive in its character rises only a few feet from the ground. That portion of the dust which rises higher is composed of smaller and lighter particles and is less abrasive in its character than that which is found in the stratum of air immediately surrounding the tractor at the height above the ground where the air intake to the en gine is ordinarily located. K

My invention is designed to exclude the major portion of the dust whichl would otherwise enter the intake of the engine.

In the embodiment of my invention shown in the accompanying drawings and described herein, there is provid-ed a fabric tube forming an air supply pipe the intake end of which is held aloft above the dust laden zoneof air while the lower end of the tube is connected to the air intake of the carburetor which serves the engine. Dust free air is thus continually drawn from aloft into the engine, the dust surrounding the engine at the height above the ground where the air intake is ordinarily located, being entirely eXcludedby the treated fabric tube.

My invention is fully described in the following specifications and shown in the accompanying drawings in which:

Figs. l and 2 are views of my device applied to a tractor; i

Fig. l is ak side 'elevation of one'of my dust eXcluder-s mounted upon the frame of a vehicle and connected through the carburetor to the intake of the internal combustion engine which drives the vehicle;

Fig.y 2b is a side elevation, of one of my dust excluders supported upon the carburetor housing and connected through the carburetor' tothe intake of an internal combustion engine;

Fig. 3 is a vertical longitudinal section of the lower portion of the dust excluder shown in Fig. 51a; y y

Fig. dis a vertical longitudinal section of the lower portion of the dust excluder shown in Fig. 2b;

Fig. 5 is a section on line V-V of-Fig. 4;

Fig. 6 is a plan view of the mast and flue of the dust eXcluder; y Y

Fig. '7 is a vertical section of the top portion of the dust excluder` on line VII-VII of Fig. 6;'

Figs. 8 and 9 show modified means for supporting the dust excluder.

Referring to the drawings, l, represents a vertical mast which, as shown, consists of a bamboo pole but which may be made of any suitable, light, strong material.

Surrounding the mast, l, is a fabric tube,

2, forming anfair intake flue which isreinforced by a helical spring wire coil, 3, which holds the tube laterally distended and permits it to be collapsed or extended longitudinally without closing the flue opening. The dust eXcluder is thus made adapt able to any height of support up to the full length of the fabric tube.

The cloth or fabric tube, 2, is open ended at the top, "folded over and sewed to the top coil ofthe reinforcing wire as shown at 2a, and is held central with the mast, l, by means of a cross wire or spider, 4, which is attached to the reinforcing wire, 3, and may be tied to the mast, l, in the manner shown in Figs. 6 and 7. Or, the supporting mast may be outside of the tube and the latter may be hung to the mast as shown in Figs. 8 and 9, or in any other convenient manner.

The lower end of the flue, 2, is tted with a tubular metal connecting member, 5, which telescopes inside of several oonvolutions of the reinforcing coil, 3. Over the canvas or fabric tube., 2, which surrounds the connecting member,;.5, there is placedanother tubular metal member, 6I The tubes, 5 and 6 are removably secured together and" toH the flue, 2, by means of Cotter pinsgr. l

In the structure shown in Figs. 1a and 3, the mast, 1, is removably*supp'ortedinthe socket member, 8, which is bolted securely toV the frame and is provided with"afcylindric'al'L end portion,.9, for the support and end closu'reof the tubiilar member 5. Branching from the tubular member,v `5, isv the tube, 10, tlirough which airis contlluctedlto the corburetor o'r air heatingstoye'o'n its way to the internal' combustion engine.. y

lli" Fig." 1 ofthe drawings, 'I have shown a flexible; metal hose, 11', connecting-the outlet tube, 10, of tlie dust' ei'cl'uder to the carburetor, 12.Y In the' form of' 1ny invention shown' in' Figs. 2b` and 4', the] mast, 13, is supported in` a socket', 114, which is fori'ned concentric with the air intake'of'f the carburetor', V1.5,a'nd which issupport'ed byspokes, 16, upon thewa'll, 17, ofthe-carburetor air intake. .Openings 18, between' the" spokes, 16,= permit the airto" enter the carburetor.

It isobv'ius tliat other Vnie'a'nsl for' supporting my dust excludingr fine may be employed." For inst'ance'tlie'ma'st may beoutside ofithellea's shovvnat19 inFig'. 8or, two or more masts may' be employed' as Vshojv'nat`2() ,in Figi 9.' l

Tlefabri'cof' which the tube, 2,' is`made may be of any suitable material such as cotton ducking,v` muslin, orwovenjtubing. I prefer that itI lbe' impregnated or' painted: with waterproof oil o'r' varnish a's. such treatment prevents tlie admissionrof' fine dust'particles tlirou'gh'the wfallof the flue and lengthens the'life ofthe fabric. l

They manner' of using'my'invention will be apparent'y from aninspection of Figs'. 1, 1?, 2, 2b, 8 an'd9j- Thema-'st' and flue n'iay be Inadeof any desirableV or necessary height tocfarryiits' top or air-iiitakeend abovcthe dustladen'air. Ordinarily froinsiX toten feet' is sufficient; lVhen applied to' the air intake `of" a'ninternal combusti-nir engine in the manner shown anddescribedherein, `my invention excludes the abrasive dust which, asvis well known, is extremely injui'iousto such i engines, and greatly 'prolongsithe life of thle wearing parts and maintainsithe" econ# omy'fofl'the engine'. y

Among" the adva'ntages"of my invention arefrsimp'licity'-, lew cost andadaptability to citi-rer' new or1 oldf engines; TheV device is light'y an'd isl casily removed wh'e'n not/need-` ed.l Theidu'st"excludingfabrictube is fleX- ib'ljean-'d not" easily injured-by the swaying o'fftlie'vehiclelon wl'richlitis carri'edfV T he materi afls-'o'f which? any* invention `-is made are almost universally available and repairs and replacements can be made quickly Aand cheaply by unskilled persons. As shown in Fig. 2, the mast with its tube` may be detached from the engine-intake and* compacted on the tractor structure; as one way`I of compact'ing' tlie device, l may lay the same in a horizontal positionv in suitable brackets 22 on the tractor hood, the fabric tube being, asshown in Fig.` 2, preferably collapsed in accordion fashion at the lower end of the nia/stt` Having thus described my invention, I Claim; i

1. n an'internal combustionengin trac-A tor, a' dust excluder for' the" carbureterf of' the ei'igine comprisingl anf air-supplyLpipe' longitudinally extensible' and collapsible and' having its" lwer-end' connectedl to tlie intake of the carbureter and' itsinlet-end extending to' a" peintY inl the atmosphere above tlie 'Zone of'dust raised'lby:'thel tractor, and a' supporting'means"foi" the pipev to hold it'y aloft; in non-collapsed openl conditionyso that the ysupplyA o'f air'fbr the' carbureter is obtainedfrom a point' above theusual dust neutri-aisee, b'y the; tractor;

2; In an"internal'combustion engine'tra'ctor, a dust eXcluder fortlie engine compris'- al'ir-'supply-pipe wliicli'is' flexibleand @dimensie and which has" its iwerred connected to the intake of the ca'rbui'eter, a nia'st mounted on` thetractm" and extended to 'apoinft above'lthe dust r'ai'sed bythe traci tor, andin'eans for holding the upper-end of the' p'ipe open" and suspended on` the upper'gend of the' mafst 3.111; a' motor 'vehicle"construction adus't @relatief for internal: consumen engines comprising a'fleXible co'llapfsible fabric'tube la`ving'one e'nd connectedy to the" airiiii'take offtheengine'aiidtmenns for supporting its other' end* aloft` above'y the dust laden' a'ir surrounc'ling" the vehicle, said supporting means consisting dfiani'ast mounted onthe veliicle'." y v 4; A dust exc'lder" fori internaly coi'nbus tion" engine vehicles" comprising a" fabric tube".l1av'ing'an internal Helical wirey reinforcement, nie'ans for connecting/one end o'f said tube tothe' air Ainta'k'eofthe apparatus it isrtoserve', Aand1 a mast risingI froin'the velficletfor supportingfthe otheri en'd of said tii'be' at a distance from saidxair' intake.'

5l' nan internal/combustion' engine' tractor, a dust excluder" rfor' the" enginex, coin-x prising acollapsible air-'supply pipe having its ou-tletlen'd 'connected t'o tlfe intake' 'of'ftlie engine and its inlet-'endv extendingY upward toa` pointt in' xthe atmosphere above` the Zone of dust raised i by lthe tractor, niean's being provided whereby this tube may be renoved fionrconnectionwith the intakey of the"v engine and yco'in'pat'zte'd t on" tlie'tractorl 6. In an internal combustionenginevelfii cle, the combination with the engine and its 'crbureter of an air supply pipe having one end detachably connected to the air intake of the carbureter and its other end extending to a point in the atmosphere above the zone of dust raised by the vehicle.

7. In an internal combustion engine vehi- 01e, the combination with the engine and its oarbureter of an extensible air supply pipe having one end detachably connected to the air intake of the oarbureter and its other 10 end extending to a pointin the atmosphere above the zone of dust raised by the vehicle. In testimony whereof I aiX my signature.

WILLIAM H. BROWN. 

